Data recording apparatus, data recording method, and optical recording medium including pseudo-erasing features

Abstract

Data is recorded on packet basis to a track of an optical recording medium and the data is pseudo-erased by erasing contents information of the track having the data. Information indicating the end position of the packet containing the data is recorded on the optical recording medium and a new data is recorded to the track where the data has been pseudo-erased in accordance with the information indicating the end position of the packet.

Description

CROSS REFERENCE TO RELATED APPLICATION [0001] This application is a continuation of application Ser. No. 09 / 819,849, filed on Mar. 29, 2001, the entire contents of which being incorporated herein by reference.BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates to a data recording apparatus and a data recording method for data recording on a packet basis onto a track of an optical recording medium as well as to an optical recording medium having a track on which data is recorded on a packet basis. [0004] 2. Description of the Related Art [0005] In an optical disc such as a compact disc (CD), data recording is performed through small holes, called pits, formed on a recording surface of the disc. Data is reproduced by reading presence / absence of the pit and its length. As the disc of such CD-specification, there are also a CD-Recordable (CD-R) disc in which additional data can be written and a CD-Rewritable (CD-RW) disc in which data can be...

AI Technical Summary

Benefits of technology

[0017] It is therefore an object of the present invention to provide a data recording apparatus and a data recording method for an optical recording medium on which data is recorded on packet basis with respect to the track, enabling to detect accurately and in a short period of time a recordable position of a new data after pseudo-erasing a data as well as an optical recording medium for recording such data.

[0019] In this data recording apparatus, the packet position recording means records on the optical recording medium an information indicating the end position of the packet containing the data and in accordance with the information indicating the end position of the packet, the data recording means records a new data onto the track where the data has been pseudo-erased. Accordingly, it is possible to accurately detect a new data recordable position within a short period of time and properly record a new data onto the track where the data has been pseudo-erased.

[0021] In this data recording method, it is possible to accurately detect a new data recordable position within a short period of time and properly record a new data onto the track where the data has been pseudo-erased.

[0023] In this optical recording medium, information indicating the end position of the packet containing data and accordingly, it is possible to accurately detect a new data recordable position within a short period of time and properly record a new data onto the track where the data has been pseudo-erased.

Problems solved by technology

However, since the maximum number of write tracks to be written is limited to 99, there is a problem that it is impossible to sufficiently utilize the storage capacity of the optical disc.

However, in this optical disc, when the program area contains 99 logical tracks recorded, a new data item cannot be recorded even when an area available for recording is remaining in this program area.

Thus, the optical disc has a problem that it is impossible to use the storage capacity sufficiently.

Accordingly, there is often a case that a data is written at an erroneous position, considering that the pseudo-erased data is an actual data.

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